51528793 has 4 divisors (see below), whose sum is σ = 51546240. Its totient is φ = 51511348.

The previous prime is 51528787. The next prime is 51528797. The reversal of 51528793 is 39782515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39782515 = 5 ⋅7956503.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51528793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51528797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3073 + ... + 10606.

It is an arithmetic number, because the mean of its divisors is an integer number (12886560).

Almost surely, 2^51528793 is an apocalyptic number.

It is an amenable number.

51528793 is a deficient number, since it is larger than the sum of its proper divisors (17447).

51528793 is a wasteful number, since it uses less digits than its factorization.

51528793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17446.

The product of its digits is 75600, while the sum is 40.

The square root of 51528793 is about 7178.3558702533. The cubic root of 51528793 is about 372.1202664480.

The spelling of 51528793 in words is "fifty-one million, five hundred twenty-eight thousand, seven hundred ninety-three".